摘要：Industrialization of garri processing has impacted enormous stress on the soil medium of the processing center of Umuagwo and its immediate environment which stretched up 4 km. Therefore, this study assessed the cassava-mill-effluent -polluted eutic tropofluvent soil quality typical of the study area. Three soil morphological units namely; pedond A (Background or control), pedon B (Discharged point DP) and pedon C (Down stream DS) were identified and transect was used to link the three pedons at the inter-pedon distance of 500 m. Soil samples were collected from the pedons at different soil profiles of layers; 10-15, 15-30, 30-7 and 70-100 cm which were represented as L1, L2, L3 and L4, respectively, using the stratified random sampling technique. The samples were analyzed to determine %sand, %silt, clay, organic matter , porosity, bulk density, CEC, Cn, Na, Cd, Zn, Pb and Ph using standard analytical methods. The analysis showed normal soil physiochemical values typical of eutric tropofluent soil at Pedon A (background unit) but glaring deviation from normal at pedons B and C. Pollution load indexes used to assess the level of pollution in the study area showed a significant Pollution Load Index (PLI) as the PLI is greater than 1. The pollution was equally classified with Na constituting excessive pollution, Cn and Cu impacting moderate pollution, Zn severe pollution and Cd and Pb producing slight pollution. The study area is likely to face serious heavy metal pollution if unprecedented measure is not taken to remediate it.
